Data transmitting and receiving method between a mobile terminal and an information center in a navigation system

Abstract

A data transmitting and receiving method between a mobile terminal and an information center in a navigation system is disclosed. The present invention is characterized in that if lower items of a destination are not received from the information center in the middle of receiving destination setting items to set the destination after the mobile terminal transmits a destination setting request message to the information center, the mobile terminal sends a reconnection request message and stored destination setting data.

1. A method for transmitting and receiving path guiding data of a mobile terminal in a navigation system, which comprises an information center for providing navigation information and the mobile terminal connected with the information center via a wireless network, the method comprising the steps of:
 (a) storing information on the received path guiding data in the mobile terminal when the connection is disconnected during reception of the path guiding data corresponding to destination information and current location information, wherein the mobile terminal automatically checks when the connection with the information center is disconnected before reception of the path guiding data is completed and stores the path guiding data received prior to disconnection in an internal memory; 
 (b) transmitting automatically via the mobile terminal a reconnection request message and a message including path guiding data corresponding to the stored information on the received path guiding data to the information center, prior to reconnection; and 
 (c) receiving at the mobile terminal the rest of the path guiding data transmitted from the information center upon reconnection and in response to the reconnection request message and in accordance with the message including the path guiding data. 
 
     
     
       2. The method according to  claim 1 , wherein step (a) comprises:
 transmitting the last set destination information and current location information to the information center; and 
 receiving the destination information and the path guiding data corresponding to the current location information from the information center. 
 
     
     
       3. The method according to  claim 2 , wherein the automatic check for disconnection further comprises checking if the path guiding data is received for a predetermined time, and deciding that the connection is disconnected if the path guiding data is not received in the predetermined time. 
     
     
       4. The method according to  claim 1 , wherein the step (b) further comprises displaying a picture indicating reconnection during the reconnection request.